// Copyright 2018 Grass Valley, A Belden Brand

// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at

//     http://www.apache.org/licenses/LICENSE-2.0

// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

//align.h

#pragma once

static void pad(PUCHAR &pBytes, const UCHAR padCount)
{
  ZeroMemory(pBytes, padCount);
  pBytes += padCount;
}

template <typename T>
UCHAR getAlignment(const PUCHAR pHiByte, const PUCHAR pLowByte)
{
  const UCHAR ret(static_cast<UCHAR>(pHiByte - pLowByte) % sizeof(T));
  return ret ? sizeof(T) - ret : 0;
}

template <typename T>
static void align(PUCHAR &pHiByte, const PUCHAR pLowByte)
{
  pad(pHiByte, getAlignment<T>(pHiByte, pLowByte));
}